How much does it cost to fix Sime error code AL 95?

Typical repair cost for the Sime AL 95 fault is £120-300 including labour.

AL 95 High

Sime AL 95 Fault Code

Q: What does the Sime AL 95 fault code mean?

Your boiler is struggling to maintain a steady flame, causing it to shut down to prevent damage or unsafe operation.

Also written as AL95 — same fault.

The Sime AL 95 fault code means: your boiler is struggling to maintain a steady flame, causing it to shut down to prevent damage or unsafe operation.. It appears on 7 Sime models in our database.

Technical description: Flame signal micro-interruption — contact Technical Assistance

Typical repair cost £120-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Sime models that show the AL 95 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Sime AL 95 fault code information on this page is sourced and cross-checked against the official Sime service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026